Assassin's Creed basically embodies the main differences I've come to expect from PC vs. Console games. High degree of polish and production value at the expense of content, depth and replay value. AC exceeded my expectations in how well it was ported to the PC and the stunning visuals. Game looks absolutely fabulous and runs flawlessly as well. Silky smooth without any major drops in FPS or HDD thrashing I'd expect in a PC game with similar visuals.
Some examples of PC vs Console trade-off is with combat. Instead of flailing around with buggy hit boxes and clipping problems you might see on the PC, many of the combos and counters are "scripted" or "canned". As you get better you'll be able to trigger them more often. While you don't have much actual control over the combos, the effect is visually stunning and a lot of fun. Now compare this to something like The Witcher, where combat was also visually stunning, just not nearly as fun.
Another example is the fully interactable 3D world and environments. Yes, its obvious that climbing and such relies on certain objects and triggers, but it results in a seamless and intuitive experience that sees you scaling massive walls and towers and jumping around rooftops at break-neck speeds. Now compare that with something like The Witcher, where you can't even scale a 2ft high hedgerow.......
So yes, overall I really enjoyed AC for what it is, but I'm especially pleased with how well it ported to PC. Certainly a good sign and shining example for future console to PC ports.